Duplicating machine



April 11, 1933. I L, E N 1,903,625

DUPLICAT ING MACHINE Filed July 2, 1928 4 Sheets-Sheet l lwkwwz,

April 11; 133.

L. JENSEN DUPLICATING MACHINE Filed July 2, 1928 4 Sheets-Sheet 2 UH HM j April 11, I933. LJENSEN DUPLICATING MACHINE Filed July 2, 1928 4 Sheets-Sheet 4 Patent Apr. 11, 1933 PMCAG Teena-1; .f

018, A @OEPQRATION GE ILLINOIfi Application died 3111? t, 19%. deals! Ho. QSSSQG.

This invention pertains particularly to e. duplicating machine equipped with e typewriter and adapted to the purpose of filling in multiple accounting slips, sales slips, or the like, with which continuous strips of paper are provided, these strips being taken, prefershly, from a. single roll.

In such a machine, it is usual to lead the strips of paper from'e roll, or rolls, to'suitable strip guiding and supportin means and thence across the plsten, to supp y meens for engaging the advance end-portions of the strips, and to provide tensionin means which tend to retract the strips. 'l e urpose of the present invention is to provi e e safetyceteh mechanism preferably heck of the platen, which will operate automatically to engage the strips end prevent them irom being withdrawn from the guiding and supporting menus in case of accidental release of the advance end-portions of the strips.

The invention is well sdepted for use in connection with a. type of machine comprising s track upon which is mounted a. cerriege for movement longitudinally on the track for line-spacing purposes, said carriage hsving mounted thereon s. transversely movshle typewriter which is moved in the usual way to effect letter and word spacing. The invention is applicable, however, to other types of duplicating machines, registers, and the like.

The invention is illustrated in e preferred embodiment in the accompanying drawings, in which- Fig. 1 is s side elevetionsl view of n machine equipped with the invention; Fig. 2, e, transverse vertical section through the bed of the machine, taken as indicated at line 2 of l; Fig. 3, a broken longitudinal section telren as indicated at line 3 of 2; Fig.

4, a broken plan view showing hrolrenly on extension of the bed (reversed with reference to Fig. 3) Fig. 5, as broken vertical sectional view taken as indicated at line 5 of Fig. 4:; Fig. 6, an enlarged broken sectional view taken as indicated at line 6 of Fig. 5; Fig. 7, an enlarged broken vertical section token es indiceted at line '3' of Fig. 5; Fig. 8, a. broken front perspective view of the means em:- ployed at the front end of the platen for engaging the advance ends of the strips of the paper, the view showing a. clamping-her in raised position; Fig. 9, e section taken as indiceted at line 99 of Fig. 8; and Fig. 10, n

section tekenas indicated at line 10 of Fig. 3. I In the preferred embodiment which is illustrated, A designates s, standard upon which is mounted a. track comprising speced rails A; B, e cerrie mounted to move longitudinslly on sei rails, said carriage supporting e transversely shifteble type writer B C, s platen mounted Mtween the rails A; D, D, carbon rolls mounted at o posite sides of the treck, and carrying t e cerhon strips D which extend transversely across the platen; E, strip supporting and guiding means mounted hetween the rearwerd extensions or" the rails A; F, e paper strip roll mounted in hangers l depending from the rolls A and from whence paper strips F are led over the strip supportin end guiding means E of the bed; and sefety catch mechanism mounted in the space hetween the rail-extensions in cooperative reletion with respect to the strip supporting and guiding means E.

The standard A, the bed comprising treclrs A, the typewriter carriage B, and the typewriter B, are of well lrnown construction, end need not he described in detail. Liliewise, the piston C is mounted between the reils of the bed in o. well known munner on lever-mechanism 0 adopted to he sctueted through the medium of a link C lay moons of e foot-tresdle (not shown). Referring to Fig. 3, it niev he stated-that the rear endportion 1 of theplsten is adapted to be lowered through the medium of the toot-treedle, when desired; end when this notion occurs, s pair of levers 2 mounted on rock-sheft 3 is actuated to lift the clamping-her i which noacts with en underlying transverse stationcry her 5 which rigidly connects the front ends of the track-rails.

The rigidly secured front cross-hsr 5 is equipped with studs 6 adopted to engage punchdmoles with which the paper strips F are provided. In the illustration given (Fig. 8), the studs 6 are carried n sheet-metal member 6* which is shaped to ill conform to the contour of the upp e" por the crossbar 5, the Inemher equipped with attaching lugs 6 secured fih mil

l 1* a .1-1. by ot scr 1 15 pro e :.orrns, are clamped by means of h r set of forms has been tiil d in, th depresses the treedle, which has lowering the rear portion 1 oi the 1 lifting; the clamping-bar it. then in position to he drawn or able a fresh set of punch-hoies to he hro into engagement with the studs 6, siter 1 the pre parts permit" springs enmioycci in connection with the 5), to resume the pesition. shown "hen. "ears o" y is intend-ed to prevent such rec-- I '"ithdrawai oi the strips from the guiding end supportingmean The carbon rolls D are Well known features in this type of machine. The cerhon strips are interleaved between the paper strips in the manner illustrated 'in Figs. 2 and 3.

The strip supporting and guiding means E, with the platen C, forms a bed over which the paper strips are drawn. The means E comprises a pair of substantial trensverse rods, or bars, 8 having their ends secured in longitudinal bars 9 which are secured to the inner surfacesof the rails A; e series of transverse small guide-rolls, or rods, 10 havmg their ends mounted in the bars 9; and a pan of V longitudinal guide-members 11 mounted on the guide-rods 10 and adjustebly secured by means of set-screws 11 The guide-bars 11 are adapted to engage the edges cross-rods 8, each of paper, so as i. iteep the prop drip centered.

the paper roll F is, in the illust ation given, n roll made up of three wound upon e core 12 having W on which is s hese arms 14" ere 1e hangers The rising .c in ihils A e. short distance heels: 0.; st M rd and ti-shnpcd tensionmembers 14; extend reerwerdiy item. the h ngers, Springs it connect the arms re hangers F. The rods drew th 'WZIIS of fine perforations in the strips the studs s end preserve proper niin .cnt of the strips Stops limit the drop or the here 14.

The sefetymatch mechanism G, in. the iilnstretion given, comprises a pair of longitudinai bars 15 ad'ustebly mounted on t e er carrying e series of pivoted cetehenembers 16 which are adept-- ed underlie the strips of paper, but which tend to swing to strip-catching position, Eech member 16 is in the form of s, pewi connected by pivot 16 t the corresponding oar 15. The pawl has at Essie-engaging fin 16 at the upper end and has it weighted lower nd 16.

y cetch is so punch-hora s are r T forward.

To hold the paper strips in proper posi time so that they cannot esca e the catches in the event that the paper strlps are violent- 1y drawn rearwardly by the tensioning device, a series of transverse rods 17 are disposed above the path of the strips, these rods having their ends secured to the bars 9. Each rod 17 is placed in position to form a stop for the catch-finger 16", as shown in Fig. 5. That is, the rod acts as a stop which prevents the catch-fin er from being drawn rearwerdiy far enoug to let the finger become disenga ed from the punch-hole. To enable the pivoted catches to be properly adjusted with relation to the spacing of the punch-holes of a given pair, the bars are equipped with set-screws 15 which engage the rods 8. Thus, the bars can be shifted iii ELM

, beneath the paths of the punch-holes with tend l5 oi the machine.

which the strips are provided.

To enable t e strips of paper to be threaded through beneath the rods 17, the mocha-c nism G is equipped with a device for positively swingmi the catch-members 16 to the forwardly on upwardly inclined position illustrated by the two rear catch-members in Fig. 5. e device referred to comprises e forwardly end reerwardly movable bar 18 hevinr depending lugs through which exii'eely rods 18 adapted to enege the lower portions ot the pivoted ca and swing them reerwardly. The ends of the rods 18 are mounted in slots with which the bars 15 ere provided. Thus, the rods 18 are shiftable forwardly and reerwsrdly and support the ber 18, v

The her 18 is slidebly mounted in e longitudinel uide-bar 19 which has its ends provided with perforations throuh which the cross-rods 8 extend freely. bar 19 is lined in position by means of set-screws 19-; The member 19 carries e depending lug 19 in which is journelled a rock-member 20 equipped with e gear-segment 20 which engages u rock 21 with which the bar 18 is equipped at its lower side. The depending arm of the rock-member 20 has connected therewith e forwardly extending rod 22 whose front end is equipped with as ch 22. The front end-portion ot the rod is supported by u guide 23 at the front end of the bed Thus, the Rob 22 is accessible at the front portion of the machine, as appears from Fig. 1.

When it is desired to thread the paper strips through the guides, the rod 22 is drawn forwardly, thus moving the ber 18 rearwerdly and causing the cross-rods l8 to retroct the strip-engaging fingers, so as to leave open e path through which the strips can be threaded. After the strips have been threeded through the machine, the rod 22 is shoved rearwerdly, thus moving the her 18 to the udvance position shown in Fig. 5, leaving the cetch-fingers free to automati cnlly engage the ranch-holes in case the strips are accidents ly released,

Any desired number of catch-gore may be employed. The use of means for retract ing the catch-fingers to facilitate the threading of the strips through the machine is desirable, but is not essential. By an loying a series of catch-fingers underneath the ath of the series of punch-holes at the side 0 the center of the machine, the chance of the strips eluding the catch-fingers is reduced to a minimum. Ordinarily, a single set of catchfingers will" sufice; but inasmuch as there is some inconvenience attached to rethreading the strips through the machine, it is preferred to employ a plurality of catch-fingers assofiialted with each longitudinal series of punch- The use of catch-fingers adapted to protrude through the punch-holes has proven satisfactory in practice. However, any other suitable form of safety-catch which is autoinetic in its action of arrestingthe retraction of the strips and which is automatically released by the strips when they are drawn forward may be employed. 7

The foregoing detailed description has been given for clearness oi understandin only, and no unnecessary limitations shoul be understood therefrom, but the appended claims should be construed as broadly as perissible, in view of the prior art.

What I regard as new, and desire to secure by Letters Patent, is: I

1. in moons of the character set forth, a bed equipped'with strip supporting and guiding moons over which strips provided with punch-holes may be drawn, pins fixed to the rent end oi seid bed for holding the advance ends of the strips, a, strip-supply source, strip-tensioning means tending to retract the strips, a safety-catch mounted on said bed beneath the path of the strips and serving as e feeler and adopted to automatically engage a punch-hole in the strips in case oi accidental releese oi the strips, seid safety-catch being automatically released by the strips when they are drawn forwardly, means above the strip for limiting displacement of the safetycutch when it engages e punch-hole, end means normally accessible to the operator for loohngg said safety-catch in inoperative position.

2. In menus oi the character set forth, a bed equipped with strip supporting and guiding means over which strips maybe drawn, menus for holding the advance ends of the strips, :1 strip-supply source, strip-tensioning means tending to retract the strips, a plurality of feeder-fingers in longitudinal slinement mounted on said bed beneath the Jail of the strips and adopted to engage punc -holes and catch the strips in the event of accidental release of the strips, said color-fingers being automatically released by the strips when they ere drown forwardly; and manual means normally accessible to the operator for throwing said color-fingers to into and out of operative position to enable the strips to be of said strip supporting and guidingameanfi rs an o and catch-members pivoted on said adapted to engage punch-holes in the strips when the strips are drawn rearwardly and ill) , catch-mem adapted to be released when the strips are drawn forwardly.

4. In means of the character set forth, the combination with strip supporting and guiding means, of rods extending transversely of said strip supporting and guiding means, a pair of bars adj ustably mounted on said rods and extending longitudinally of the strip supporting and guidine means, and catchmembers pivoted on said bars and adapted to engage punch-holes in the strips when the strips are drawn rearwardly and adapted to be released when the strips are drawn forwardly.

5. In means of the character set forth, strip supporting and guiding means, means for holding the advance ends of strips, a stripsupply source, strip-tensioning means ten ing to retract the strips, ieeler-fingers each pivotally mounted beneath the path of the strips, said feeler fingers having weighted members normally holding the fingers in contact with the lower strip and serving automatically to cause the finger to enter at punchhole when the finger encounters the punchhole, and a transverse rod disposed above the ath of the strips and adapted to be engaged y the feeler fingers when the latter are in their strip-catchin positions.

6. In means of t e character set forth, the combination with strip supporting and guiding means, of a pair of bars extending longitudinally of the strip supporting and guiding means, means for securing said bars: in a plurality of adjusted positions transversely of the stri supportin and guiding means hers pivote on said bars an adapted to engage punch-holes in the strips when the strips are drawn rearwardly and adapted to be released when the strips are drawn forwardly, slidably mounted bars, rods carried by said slidably mounted bars and engageable with the catch-members to hold them in functionally inoperative posh tions, and means for reciprocating said slidably mounted bars.

7. In means of the character set forth, the combination with strip supporting and guidmeans, of a pair of bars extending longi- 1n 'tudinally of the strip supporting and guiding means, means for securing said bars in a {plurality of adjusted positions transversely o the stri supporting and guiding means, catch-memhers pivoted on said bars and adapted to engage punch-holes in the-strips when the strips are drawn rearwardly end adapted to he released. when the strips are drawn forwardly, slidehly mounted hers, rods carried by said slidahly mounted 7 and .engageahle with the catch-memh hold them in functionslly inopers tions, end means including; en; for displacing said slide 0. In means of combination with mosses 

